CRAWLER TRAVEL DEVICE AND WORK VEHICLE USING CRAWLER TRAVEL DEVICE

摘要

PROBLEM TO BE SOLVED: To avoid the occurrence of a large quantity of thrust mud and the damage to crawler belts at a turn of a machine body while suppressing the derailment of the crawler belts. SOLUTION: A plurality of ground rollers 4 guiding the ground side of the inner peripheries of the crawler belts are provided. The ground rollers 4 located at the front end and the rear end in the ground range of the crawler belts 17 to the travel road surface and the ground rollers 4 located at adjacent positions to the ground rollers 4 are fitted balance-rockably around the fulcrum shafts 40 provided on a truck frame 10. The fulcrum shafts 40 are located above the rotary shafts 44 of the ground rollers 4.